<div class="center">
  <div class="design">
    <div class="circle-1 center color-border">
      <div class="circle-2 center color-border">
        <div class="circle-3 center color-border">
          <div class="circle-4 center color-border">
            <div class="circle-5"></div>
          </div>
        </div>
      </div>
    </div>

    <div class="mountain-1 shape shadow"></div>
    <div class="mountain-2 shape"></div>
    <div class="mountain-3 shape shadow"></div>
  </div>
</div>

<style>
/* From Uiverse.io by revanth-004  - Tags: sun, app, css, mountains, scenery, art */
.center {
  display: flex;
  justify-content: center;
  align-items: center;
}
.design {
  height: 200px;
  width: 200px;
  border-radius: 40px;
  background: rgb(255, 11, 0);
  background: linear-gradient(
    180deg,
    rgba(255, 11, 0, 1) 13%,
    rgba(255, 158, 0, 1) 100%
  );
  position: relative;
  overflow: hidden;
}

.color-border {
  border-radius: 50%;
  background-color: #ffffff20;
  box-shadow: 0px 0px 10px 2px rgba(0, 0, 0, 0.1);
}
.circle-1 {
  height: 220px;
  width: 220px;
  position: absolute;
  right: -50px;
  top: -50px;
}
.circle-2 {
  height: 180px;
  width: 180px;
}
.circle-3 {
  height: 140px;
  width: 140px;
}
.circle-4 {
  height: 105px;
  width: 105px;
}
.circle-5 {
  height: 70px;
  width: 70px;
  border-radius: 50%;
  background-color: #ffffff;
}

.shape {
  height: 200px;
  width: 200px;
  background-color: #484848;
  transform: rotate(45deg);
  position: absolute;
}
.shadow {
  box-shadow: 0px 0px 20px 0px rgba(0, 0, 0, 0.75);
}
.mountain-1 {
  z-index: 1;
  bottom: -100px;
  left: -100px;
}
.mountain-2 {
  bottom: -110px;
  left: -30px;
}
.mountain-3 {
  z-index: 2;
  bottom: -150px;
  left: 90px;
}

</style>
    